IZ4ISC — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN64

Receiver-side FT8 activity involving IZ4ISC, decoded by SO8OO in southeastern Poland. 84 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-11-04.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 84 FT8 messages attributed to IZ4ISC as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (56%), followed by 20 m (25%) and 10 m (14%). Most decodes (86%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (80%); the estimated median was -2 dB.

Overview

84
Messages attributed
11
UTC dates decoded
20
Active 15-min windows
-2 dB
Estimated median S/N

Bands

80m · 4 40m · 47 20m · 21 10m · 12
First attributed message: 2026-06-07
Last attributed message: 2026-11-04 16:34 UTC

Observed FT8 message patterns

Attributed sample
84 messages
Active dates
11 UTC dates
Estimated median S/N
-2 dB
Estimated 10th-90th percentile
-11 to +6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 15, strong (≥ -8 dB) 67.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with IZ4ISC in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to IZ4ISC

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator
JN64 · 38 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
897 km (approx.)
Last such locator decoded
2026-11-04 16:31 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTCBandIZ4ISC S/NCounterpartCounterpart S/NMsgsCapture
11-04 16:34 40m +2 / - LZ2VQ - / -13 2 ✓ Closing fragment
11-04 16:31 40m -6 / - UN9L - / -14 4 ✓ Closing fragment
11-03 17:32 40m +3 / -8 DL1BBO -1 / -6 4 ✓ Full exchange observed
11-03 17:31 40m +6 / - YO4NF -10 / -12 2 ✓ Closing observed
11-03 17:29 40m +3 / - PE1NPS -10 / -1 4 ✓ Closing observed
11-03 17:28 40m +4 / - HS5NMF - / -17 3 ✓ Closing fragment
11-03 17:22 40m +9 / - HS5NMF - / - 2 Partial capture
11-03 17:14 40m +14 / - HS5NMF - / - 2 Partial capture
10-28 17:47 40m +3 / - R2FE - / -16 3 ✓ Closing fragment
10-28 17:40 80m -9 / -9 RA2FCF -2 / -12 4 ✓ Full exchange observed
10-06 16:56 40m +4 / - HF5A - / -10 2 ✓ Closing fragment
10-06 16:56 40m +2 / - OE6PVG -13 / - 2 ✓ Closing observed
10-06 16:52 40m 0 / -1 UA4FKT +4 / -12 3 ✓ Full exchange observed
10-06 16:50 40m +6 / - R3DHP - / -15 2 ✓ Closing fragment
10-06 16:46 40m +4 / -5 UA9SHH -6 / -16 8 ✓ Full exchange observed
10-06 16:17 40m -8 / -6 RA9MI -11 / - 3 ✓ Closing observed
10-06 16:10 40m -8 / -9 UN7LEW -13 / -20 6 Partial capture
10-06 16:08 40m -12 / - IZ8PPI - / -16 2 ✓ Closing fragment
10-06 16:07 40m -9 / - EX7CQ - / -21 2 Partial capture
09-20 17:45 10m - / -9 CE2SV -6 / - 2 ✓ Closing fragment
08-28 07:39 20m -6 / - 3V8HP - / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m 
UTC    dB Audio  Message
173000  +0 2714  PE1NPS IZ4ISC RR73
173015  -9 2513  IZ4ISC PE1NPS 73
173100  +6 2715  YO4NF IZ4ISC R-12
173115 -10 2715  IZ4ISC YO4NF RR73
173200  -3 2715  US2YW IZ4ISC +00
173245  -2  499  IZ4ISC DL1BBO JO43
173300  +3 2715  DL1BBO IZ4ISC -06
173315  -3  499  IZ4ISC DL1BBO R-08 (x2)
163115 -13 2467  UN9L IZ4ISC JN64 (x4)
163415  +2 2720  LZ2VQ IZ4ISC -13 (x2)
80m 
UTC    dB Audio  Message
155430  -1 2495  RV9CX IZ4ISC JN64
174015 -11 2412  RA2FCF IZ4ISC JN64
174030  -2 1976  IZ4ISC RA2FCF -09
174045 -10 2412  RA2FCF IZ4ISC R-12 (x2)
10m 
UTC    dB Audio  Message
074800  -8 2708  UN0NZZ IZ4ISC JN64
174530  -6 2655  IZ4ISC CE2SV -09 (x2)
083100 -11  522  IZ4ISC RR73; OH2N <...> +04
20m 
UTC    dB Audio  Message
073900  -7 2562  3V8HP IZ4ISC JN64 (x4)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee